mark mcgwire of the cardinals and sammy sosa of the cubs blasting moon shots every other night and igniting baseball. years later mcgwire would admit he hit those home runs on steroids. >> i wish i had never played in that era. i wish we had drug testing. >> reporter: major league baseball began testing for steroids in 2003. a full nine years later comes the blood test for hgh, long after all-star pitchers andy pettitte and roger clemens were linked to hgh by baseball's own investigation. baseball and its players are expected to announce the unprecedented new policy on tuesday. tony guida, cbs news, new york. >>> this morning, on "the early show," the latest on the home-grown terrorist alleged of plotting bombs in new york city. i'm terrell brown. and this is the "cbs morning news." my moderate to severe plaque psoriasis. i decided enough is enough. ♪ [ spa lady ] i started enbrel. it's clinically proven to provide clearer skin. [ rv guy ] enbrel may not work for everyone -- and may not clear you completely, but for many, it gets skin clearer fast, within 2 months, and keeps it clearer up